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Subject:	Re: Heller and MPM
From:	Jason Gregory <[log in to unmask]>
Reply To:	TechNet E-Mail Forum.
Date:	Mon, 28 Jan 2002 08:17:34 -0600
Content-Type:	text/plain
Parts/Attachments:	text/plain (62 lines)

MoonMan,
How the heck are ya?
Thought I'd answer what I could on your question. First off, I absolutely love Heller ovens had a 1700, Nitrogen-inerted, with high-temp heaters (for high-lead, no-lead, 80%gold, 20% tin, etc., etc. stuff). Loved the consistency. As far as MPM 2000's. loved them as well. Here's a little info that may help you. Printers are printers, and options only enhance your printing experience. MPM has shown through the years that their products are rugged, dependable, well-thought-out, etc. Try this, K&J Marketing sells a kapton stencil. It is marketed as "Kepoch". The kapton "melts" as it's laser-cut, leaving an ultra-smooth aperture wall. Release problems are sayonara. This works especially well on extra-fine pitch parts and epoxy screening. As far as CSP, I can only imagine the further benefits. THey cost roughly the same as SS stencils and their turnaround time is unparalelled. Here is their info:

KJ Marketing Services
115 Thirtieth Street
Toronto, Ontario
M8W 3C1
Canada
Phone (416) 252 1061
fax (416) 253 1687

Hope this helps (somewhat).

Jason Gregory
Software Specialist
Sanmina-SCI - Tech Center Austin
15508 Bratton Lane
Austin, Tx. 78728
(512)246-5648
[log in to unmask]

>>> [log in to unmask] 01/28/02 07:17AM >>>
Folks,

Could all you Heller fans give me a note about reflow and their ovens. I'm
particularly interested in the 1700WN model and how robust it might be for
fairly high thermal mass boards using Kester's 562R solder paste. Kester's
profile looks straight forward enough but one of our suppliers seems to be
having trouble hitting it consistently. By the way, who owns Heller now?

Also, about 7 years ago, I bought a few MPM 2000 printers. They were great
for what we did then. Can someone tell me how they might perform on extra
fine pitch devices as QFP's and .8mm CSP's today?

Thanks,

Earl Moon

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